DHS and ODNI made a statement about election hacking that claims “disclosures of alleged hacked e-mails on sites like DCLeaks.com and WikiLeaks and by the Guccifer 2.0 online persona are consistent with the methods and motivations of Russian-directed efforts”

The U.S. Intelligence Community (USIC) is confident that the Russian
Government directed the recent compromises of e-mails from US persons and
institutions, including from US political organization...